Question

1. Write the mass number for an atom with atomic number 26 and 32 neutrons.
2. Write the atomic symbol for an atom with atomic number 26 and 32 neutrons
3. Write the mass number for a strontium atom with 50 neutrons.
4. Write the atomic symbol for a strontium atom with 50 neutrons.
5. Write the atomic symbol for an atom with a mass number of 72 and atomic number 32.

Answer 1

1. Mass number = Protons + Neutrons
Mass number = 26 + 32 = 58

2. Let the element be Xy
58Xy26

3. The proton number of Strontium is 38.
Mass = 38 + 50 = 88

4. 88Sr38

5. Let the atom be Ab
72Ab32